Dear Samsung Member,
Greetings from Samsung Customer Support!
Please perform the below mentioned steps to resolve the issue:
1. Check connectivity
Please check whether the charger cable and adapter is fixed well. Remove charging cable and reconnect with mobile phone properly.
2. Charge the device
Kindly follow the standard charging procedure. i.e; please charge the device in switch off condition for a minimum of 10 minutes.
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
Thank you for writing to Samsung.
Samsung Customer Support